Refrigerator



FIG. 1 is a perspective view of the refrigerator showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a perspective view of the refrigerator shown with the door opened. 

The ornamental design for a refrigerator, as shown and described. 